crocker



(No Model.) 2 Sheets-Sheet 2.v

J. A. GROCKER.

FILTER.

No. 279,226. Patented June 12,1883.

N4 PETERS, Pnewuxmgnprm. wnhimon, D. c.

UNITED STATES I PATENT OFFICE.

JAMES A. oRooKEE', on BOSTON, MASSACHUSETTS, Assienon To HERBERT N. SMITH, OF SAME PLACE.

FILTER.

SPECIFICATION forming part of Letters Patent No, 279,226, dated June 12, 1883.

' Application flied october 26,1882. (No model.)

To aZZ whom it may concern:

4Be it known that I, JAMES ALLEN CEocKEE, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Mas- 5 sachusetts, have invented certain Improvements in Filters, of which the following is a full, clear, and exact description, reference loeing had to the accompanying drawings, making part of this specification, in which Figure l is a front elevation of a filter constructed in accordance with my invention. Fig. 2 is alongitudinal vertical section through the-center of the same. Fig. 8 is a transverse Vertical section on the line :vx of Fig. l. Fig. 4 is a plan of the top of the casing with a portion of the cover broken away. Fig. 5 represents my improved strainer; Figs. 6 and 7, sectional details to be referred to.

My present invention has for its especial ob- Q0 ject to simplify the construction and thereby reduce the cost of a lter, without detracting from its efficiency; and this invention consists in a single independent shell or casing having no outer or inclosing casing, said Single casing containing the filtering material and passages for the flow ofthe water, inl colnbination and communicating with hollow stationary j ournals, which. serve as inlet and outlet pipes, and around which the single iilter-casing is' capago ble ot' being reversed, whereby the filter is simplified and the cost of the ordinary outer or inclosing shell or casing is avoided.

My invention also consists in a stand or frame formed of the supply and distributing pipes for supporting the ilter, and in which itsjournals are prevented from rotating, the filter revolving around stationary journals.

My invention 4also consists in a pair of' cor` rugated strainers located outside the filtering 4o material and fitting into frames provided with supportingbars, said frames being held in place at the opposite sides ofthe filter by covers, whereby the superficial area ofthe straining-surface is increased, which is desirable or 4 5 necessary when water under a low pressure is to pass lthrough the filter, and the removal of the strainers readily permitted; and my inven tion also consists in a pair of' brushes or scrapers, each located within the casingbetween one 5o of its covers and its contiguous strainer, and

provided with a handle accessible from the outside `of the filter, in order that the brush may be operated either when the water is flowing through or shut off fromthe saine; and my invention also consists in auxiliary supports for the hub of the filter-casing to be used when the latter is of considerable size and weight.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which' I have carried 6o it out. A

In the said drawings, A represents a metallic casing, provided-with covers a at its upper and lower sides, said covers beingheld inplace by a series of bolts, b, projecting out on each side of the outer edges of the casing, the heads of the bolts being slid into shouldered recesses c, formed therein, in which position their tightening-nuts d may be readily loosened when the covers are to be removed. Extending around 7o the innen edges of the upper and lower sides of the casing are formed rectangular depressions, into which fit frames e, each having secured thereto a perforated wire-gauze strainer, B, preferably of corrugated form in cross-section, (see Figs. 3 and 5,) the outer surface of each frame lying Hush with the outer surface of the casing, the strainer receiving additional support by resting on longitudinal bars j', ex-

tending between the ends of the casing, and 8o the covers n, fitting snugly against the frames e to prevent their movement outwardly. The interior ofthe casing contains thefilteringmaterial. l Y

j is the vertical branch of the supply or service lpipe entering the building from the street, andV D is the vertical branch of the distributing-pipe passing up to the various apartment-s. h

E is a horizontal pipe through which the 9o sediment passes when the filter is reversed.

G- is a horizontal pipe connecting the bottoms ot' the supply and distributing pipes, and is for the passage of the water (without fiowing through the filter) when it is desired to 95 obtain a large supply of water speedily-as,

for instance, in the event oi' fire, or in case the ed with a hollow hub, h, for the reception of' a hollow journal, i, which is surrounded by a suitable packing, k, held in place by a screwthimble, l. flhe outer end of each hollow j ournal has slipped thereover a union coupling nut, H, the outer end of which screws over a thread cut on a projection, n, extending out from its contiguous vertical pipe C or D, Figs. l and 2, by which construction the parts are made perfectly water-tight, and the casing is free to be revolved on its journals. Each jour nal is provided with a circular opening, p, lying in a horizontal plane, and extending from its interior to its outside in line with a vertical passage or pipe, I, formed within each end of the casing, and extending in a diametrical direction between and terminating on a level with the planes of the outsides of the strainers, the .passage through each journal being of the same diameter as that of its vertical communicating pipe, C or D, in which it has its bearings. Each journal is prevented from turning within its hub by means of' a dowel-pin, q, projecting out from the pipe,

bearing, and entering the outer flanged end of the journal, whereby the latter is prevented from revolving, and the position of its circular opening p is kept unchanged. rlhe circular opening p of the inlet-passage of the journal connected with the supply-pipe C is located at its top, while that of the outlet-.passage of the other journal having its bearing in the distributingpipe D is at its bottom, their positions alternating only when the casing is reversed, the said arrangement of the openings 35,19 in the journals allowing the water when of the building.

turned on to pass freely in the direction of the arrows, Fig. 2, through the hollow journal fi, through the upper branch of its contiguous casing-pipe I into the space 1' between the upper corrugated strainer and its cover, thence down through said strainer into the filtering material, the greater or heavier portion of the sediment contained in the water being deposited on the outer surface of the upper strainer, while all or nearly all ofthe small remainder is taken up or absorbed by the filtering material, the water flowing next through the lower strainer down into the space r between it and the lower cover, from whenceV it is forced up through the lower branch ofthe opposite pipe I within the casing and the circular opening p in the oppositejournal, out in a horizontal directiou through said journal into the upper branch of the distributing-pipe D, to be carried in various directions through auxiliary pipes connected therewith, to the apartments The inner side of each end of each cover c is hollowed out or recessed at a point, s, immediately opposite and in line with the passage through the pipe I, formed within the contiguous end of the easing, in order to afford an uninterrupted passage for the water to and from said pipe.

Vhen the sediment collected on the upper surface of the upper strainer is to be removed, it is simply necessary to reverse the filter by turning it a half-revolution, close the valve in the distributingpipe D, open the valve in the horizontal waste-pipe F, and the water from the supply-pipe C will carry off the sediment as desired.

To assist the water in cleansing the strainer from sediment and slime, which might 0therwise adhere thereto, I locate in the space 1', outside each strainer, a brush or scraper, Il, of any suitable material, which comes into contact with the corrugated sides of the strainer, the brush or scraper being drawn longitudinally upon its outer surface by means of a handle, t, which passes through a stuffing-box, a, in the end of the cover. These brushes may either be rectangular, as shown, or circular in crosssection, and when circulaar be made to rotate over and'upon the corrugated strainer by means of a ring connected with its handle7 or by any other suitable device. In the event of the pressure of the water being insuflicient to carry off the sediment deposited on the strainer, I intend to employ the pressure of steam, in which case the pipe conducting it may enter the supply-pipe C in a line with the hollow journal and pass through and out of the casing in the samedirection previously traversed by the water; and when steam is used the passage of the water in the supply-pipe must be closed by its valve g.

To relieve the journals of the weight of a heavy filter I intend to secure a bifurcated bracket, M, to each of the lower sections of the vertical pipes C D, forming the upright frame in which the journals bear, and provide each bifurcation o with a fri ctiolrroll, w, which will form a partial bearing for the hub, and 011 which the'casing'may be revolved. (See Figs. l, (i, and 7.)

Vhere very large filters are required for manufacturing purp oses-for instance, for boil ers and other uses in paper, woolen, starch, iron, and other mills, where the weight is Very considerable-and the water-pipes C D are not of sufficient strength to support the filter, I propose to locate it on one or more pair of friction-rolls, and thus render it capable of being readily reversed. This feature, however, I intend to claim in a future application for patent. v Instead of employing hollow journals for con ducting the water through the filter, the journals may be solid and th e pip es be made to enter the top and bottom ofthe filter, said pipes being connected by swivel tapering -joints with the supply and distributing pipes, and said connecting-pipes may be either rigid or flexible; but a-s thisV means of connecting the casing with the supply and distributing pipes will also form subject-matter in another application for patent, I will not here enter into the details by which it is carried out.

Instead of conducting the water from the upper branch of the supply-pipe C through the contiguous hollow journal f, and up the upper branch of the contiguous pipe I in the casing, and thence down through the upper strainer, the annular opening p in said hollow journal 'i may be turned downward, so as to communicate with the lower branch of the vertical supply-pipe C, and the water pass down into the space r between the lower strainer and the lower cover, the lighter portions of the sediment being carried up and laid upon the under side of said strainer, while the heavier portion would be deposited on the lower cover, and on the reversal of the casing would also fall on the upper side of said strainer, from which it may be removed, assisted by the brush or scraper L down the upper branch of the cpposite pipe I, (in the casing,) fromV which it would be discharged into the horizontal waste or sediment pipe F, and therefore I may employ the filter in either manner described.

, In the foregoing I have referred to hollow journals provided with circular openings p, to enable them* to open communication,with the supply and distributing pipes, the inner Vend of each j ournal being closed. I may, however, employ at each end of the casing a hollow journal without such opening p and with its inner end open, one such journal commucating with the supply-pipe C, and the other with the distributing-pipe D, in which case I intend to use a solid cylindrical plug to serve as a valve in the inlet-pipe I of the casing, which plug will, on thereversal of the casing, descend by its gravity into and close the lower branch of said inlet casing-pipe, while within the outl et-pipe I ofthe opposite end ofthe casing I locate a vertical cylindrical valve of a length exceeding that of the said outlet4 casing-pipe, and provided with flanges at its ends to iit over and close the ends of said pipe alternately, the lower end of said valve projecting down beyond the bottom of the said pipe to allow of the passage upward therein of the water after it flows into the space between the lower strainer and its cover.

I claiml. A filter having only a single independent shell or casing, A, in which are directly located the filtering material and passages I I for the flow of the ,water through the iilter, in

combination with the hollow stationary journ'als i z', around which said casing is capable of being turned, and which also serve as inlet and outlet pipes communicating with the Apasat the opposite sides of the casing, substantially as set forth.

4. In combination with the flltering-casing A, covers c, and corrugated strainers B, the

brushes or Scrapers L, located between said covers and strainers and provided with handles projecting outside of the casing, whereby they may be manipulated at pleasure, substantially as explained.

5. A iilter consisting of only a single casing, A, with itsvertical pipes I I, located at opposite sides thereof, the hollow journals M, with their openings p p, and the supporting-frame composed of branches of the supply and distributing pipes C D, combined and communicating with each other in the manner and for the purpose set forth.

6. The auxiliary supports or brackets M, with their friction-rolls w, for relieving the journals of the greater portion of the weight and wear of the filter, in combination with the vertical branches of the supply and distribut ing pipes CD, upon which the brackets are capable of being adjusted, as and for the purpose described.

fitness my hand this 17th day of October, 1882.

J AMES A. GROCKER. In presence of- J As. W. CHAPMAN,

r N. XV. STEAnNs. 

